What is the size of Gnome's top bar?
- Maximize an active window
- Then measure its size
- Apply the new calculated size on your target program window
Just a theory, not sure if wmctrl and xdotool are still working fine with Wayland.
user@Bee3:~/Desktop$ wmctrl -lG
0x01600003 -1 136 54 1168 699 Bee3 @!68,27;BDHF <-- desktop may be
0x02a0000a 0 454 60 912 664 Bee3 user@Bee3: ~/Desktop
user@Bee3:~/Desktop$ wmctrl -lG
0x01600003 -1 136 54 1168 699 Bee3 @!68,27;BDHF
0x02a0000a 0 136 54 1168 699 Bee3 user@Bee3: ~/Desktop <-- terminal window maximized